View Compilation Error

0_0_1701377_7587.cpp:2: error: `_int64' was not declared in this scope
0_0_1701377_7587.cpp:3: error: expected `,' or `;' before '{' token
0_0_1701377_7587.cpp:12: error: `_int64' does not name a type
0_0_1701377_7587.cpp:19: error: `_int64' does not name a type
0_0_1701377_7587.cpp:44: error: `main' must return `int'
0_0_1701377_7587.cpp: In function `int main(...)':
0_0_1701377_7587.cpp:45: error: `_int64' undeclared (first use this function)
0_0_1701377_7587.cpp:45: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1701377_7587.cpp:45: error: expected `;' before "cases"
0_0_1701377_7587.cpp:46: error: `cases' undeclared (first use this function)
0_0_1701377_7587.cpp:48: error: `a' undeclared (first use this function)